{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["engineering feature", "concept or principle", "biomedical", "enabling technology", "process parameter", "machine or equipment"], "input": "This is the main workflow of current tools ."}
{"engineering feature": [], "concept or principle": ["workflow"], "biomedical": [], "enabling technology": [], "process parameter": [], "machine or equipment": ["tools"]}